Vibrant Performance v-band flanges are constructed entirely from a 300 series stainless steel clamp that features a unique quick release clamping mechanism, and a unique male/female 6061 aluminum flange design to ensure proper alignment inside the clamp. Vibrant Performance aluminum v-band flanges are an excellent alternative to traditional “under the hood†silicone coupler connections, offers a solid, leak free connection with a built in FKM rubber O-Ring and work well under operating conditions involving stress, vibration and temperatures that do not exceed 350deg F. They are available in diameters that support O.D. tubing ranging from 2†to 4â€.